3 Types of meninges :


Dura Mater – “Tough Mother”, outer layer, protects the brain, partially attached to the skull to secure the brain so it does not move.

Arachnoid – “Spider-like”, middle layer, laced with blood vessels, attached to Dura, the cerebral-spinal fluid is in between the Arachnoid and the Pia.

Pia Mater – “Soft Mother”, innermost layer, closely adheres to the brain, laced with blood vessels, brains main supply of nutrients
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3 Types of hematomas :


Epidural – bleeding between the skull and the duraexternal image MEDepidural.jpg

Subdural – collection of blood on the surface of the brainexternal image 10063.jpg
Subarachnoid – collection of blood between the brain and the Piaexternal image st030895.jpg